Toyota CH-R Service Manual: Terminals Of Ecu

*A

Main Body ECU (Multiplex Network Body ECU) with 1 Connector

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Main Body ECU (Multiplex Network Body ECU) with 2 Connectors

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MB-31 (BECU) - Body ground

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Battery power supply

Always

11 to 14 V

MB-32 (IG) - Body ground

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Ignition power supply (IG signal)

Ignition switch ON → off

11 to 14 V → Below 1 V

MB-30 (ACC) - Body ground

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Ignition power supply (ACC signal)

Ignition switch ACC → off

11 to 14 V → Below 1 V

MB-11 (GND1) - Body ground

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Ground

Always

Below 1 Ω

MB-18 (DBKL) - Body ground

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Driver seat belt buckle switch signal

Driver seat belt fastened

10 kΩ or higher

Driver seat belt unfastened

Below 1 Ω

MB-2 (RCTY) - Body ground

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Rear door courtesy light switch RH input

Rear door LH closed (OFF)

10 kΩ or higher

Rear door LH open (ON)

Below 1 Ω

MB-13 (LCTY) - Body ground

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Rear door courtesy light switch LH input

Rear door RH closed (OFF)

10 kΩ or higher

Rear door RH open (ON)

Below 1 Ω

F4-40 (B) - Body ground

SB - Body ground

Battery power supply

Always

11 to 14 V

F4-39 (IG+) - Body ground

P - Body ground

IG power supply

Ignition switch ON → off

11 to 14 V → Below 1 V

F4-21 (ET) - Body ground

W- B - Body ground

Ground

Always

Below 1 Ω

F4-7 (PKBI) - Body ground

GR - Body ground

Front passenger seat belt buckle switch signal

Ignition switch ON, front passenger side seat belt fastened and front passenger seat occupied

10 kΩ or higher

Ignition switch ON, front passenger side seat belt unfastened and front passenger seat occupied

Below 1 Ω